/dɪˈmænd ˈɪnstrəmənt/ – Phrase
Definition: Loại công cụ thanh toán được yêu cầu.
A more thorough explanation: an instrument (=formal document) payable upon request or when presented for payment as compared with an instrument that is payable at a set future date
Example: The courts will usually refuse to stop a bank from making payment on a demand instrument unless there is clear evidence of fraud.